# Method: messages.requestEncryption

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Sends a request to start a secret chat to the user.

# Parameters:

Name Type Description Required
user_id Username, chat ID, Update, Message or InputUser User ID Optional
g_a bytes A = g ^ a mod p, see Wikipedia Yes

# Return type: EncryptedChat

# Can bots use this method: NO

# MadelineProto Example (now async for huge speed and parallelism!):

if (!file_exists('madeline.php')) {
    copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
include 'madeline.php';

$MadelineProto = new \danog\MadelineProto\API('session.madeline');

$EncryptedChat = $MadelineProto->messages->requestEncryption(['user_id' => InputUser, 'g_a' => 'bytes', ]);

Or, if you’re into Lua:

EncryptedChat = messages.requestEncryption({user_id=InputUser, g_a='bytes', })

# Errors

Code Type Description
400 DH_G_A_INVALID g_a invalid
400 USER_ID_INVALID The provided user ID is invalid
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